Titanium Ti-15Mo-2.7Nb-3Al-0.2Si vs Ti-5553
Titanium · grade comparison
Titanium Ti-15Mo-2.7Nb-3Al-0.2Si and Ti-5553 are both titanium grades. Ti-5553 is the stronger of the two: yield strength 900 MPa (131 ksi) against 810 MPa (117 ksi) for Ti-15Mo-2.7Nb-3Al-0.2Si, about 11% more; tensile strength follows at 960 MPa (139 ksi) vs 840 MPa (122 ksi). In exchange, Ti-15Mo-2.7Nb-3Al-0.2Si is the more ductile: elongation 18% versus 16% for Ti-5553, and Ti-5553 is harder (33 HRC vs 28 HRC). Ti-5553 is lighter (4.65 g/cm³ vs 4.94 g/cm³ for Ti-15Mo-2.7Nb-3Al-0.2Si) and Ti-5553 is stiffer (105 GPa vs 80 GPa). On the shop floor, Ti-15Mo-2.7Nb-3Al-0.2Si welds better (good vs fair) and Ti-15Mo-2.7Nb-3Al-0.2Si sits in a lower cost tier (high, $$$$) than Ti-5553 (specialty, $$$$$).
Ti-15Mo-2.7Nb-3Al-0.2SiChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Ti-5553Choose it when strength drives the design, or when weight is the constraint.
Ti-15Mo-2.7Nb-3Al-0.2Si vs Ti-5553: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all titanium grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all titanium grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Ti-15Mo-2.7Nb-3Al-0.2SiTi-5553
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Rockwell C
Hardness, Vickers
Charpy V-Notch Impact (RT)
Hardness, Brinell
Same in both: Poisson's Ratio 0.33 · Reduction in Area 40%
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Latent Heat of Fusion 360 J/g155 BTU/lb
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Carbon (primary production) 42 kg CO₂/kg
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every titanium grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | Ti-15Mo-2.7Nb-3Al-0.2Si | Ti-5553 |
|---|---|---|
| CNC machining | — | Yes |
| Sheet metal | — | Yes |
| Default condition | — | O |
| Relative cost | $$$$ High | $$$$$ Specialty |
| Min. machined wall | — | 1 mm |
| Best machined surface | — | Ra 1.6 µm |
| AlCrN | — | Yes |
| AlTiN | — | Yes |
| Anodizing Type II | — | Yes |
| CVD Al2O3 | — | Yes |
| CVD TiCN | — | Yes |
| CVD TiN | — | Yes |
| Cerakote | — | Yes |
| CrN | — | Yes |
| DLC | — | Yes |
| Electropolishing | — | Yes |
| HVOF Coating | — | Yes |
| MoS2 | — | Yes |
| Multilayer CVD | — | Yes |
| TiAlN | — | Yes |
| TiB2 | — | Yes |
| TiCN | — | Yes |
| TiN | — | Yes |
| WC/C | — | Yes |
They share 1 finish: Plasma Spray.
Ti-15Mo-2.7Nb-3Al-0.2Si vs Ti-5553 — frequently asked
Is Ti-5553 stronger than Ti-15Mo-2.7Nb-3Al-0.2Si?
Yes. Ti-5553 has a typical yield strength of 900 MPa (131 ksi) against 810 MPa (117 ksi) for Ti-15Mo-2.7Nb-3Al-0.2Si — about 11% more. Tensile strength is 960 MPa (139 ksi) vs 840 MPa (122 ksi).
Which is cheaper, Ti-15Mo-2.7Nb-3Al-0.2Si or Ti-5553?
Ti-15Mo-2.7Nb-3Al-0.2Si is the lower-cost material: it sits in the high tier ($$$$) while Ti-5553 is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which welds better, Ti-15Mo-2.7Nb-3Al-0.2Si or Ti-5553?
Ti-15Mo-2.7Nb-3Al-0.2Si. Its weldability rates good (60/100) against fair (35/100) for Ti-5553.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-15Mo-2.7Nb-3Al-0.2Si and Ti-5553 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.